diff options
| author | florian <florian@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2013-03-16 22:25:47 +0000 |
|---|---|---|
| committer | florian <florian@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2013-03-16 22:25:47 +0000 |
| commit | a95a99e0c80f81519300e4a9c4b654ece9e20e31 (patch) | |
| tree | 7050f81482c126e5757cb2eae70d1780ad453e0a /target/linux/mcs814x/files-3.3/arch | |
| parent | 1be759708e3f4e4552d9185c2eb279a1c727e414 (diff) | |
mcs814x: implement MULTI_IRQ_HANDLER
Allows us to get rid of the IRQ entry point assembly
Signed-off-by: Florian Fainelli <florian@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36060 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/mcs814x/files-3.3/arch')
3 files changed, 22 insertions, 24 deletions
diff --git a/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/board-mcs8140-dt.c b/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/board-mcs8140-dt.c index 5d13283e9..9f6625cdc 100644 --- a/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/board-mcs8140-dt.c +++ b/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/board-mcs8140-dt.c @@ -40,5 +40,6 @@ DT_MACHINE_START(mcs8140_dt, "Moschip MCS8140 board") .init_machine = mcs814x_dt_device_init, .restart = mcs814x_restart, .dt_compat = mcs8140_dt_board_compat, + .handle_irq = mcs814x_handle_irq, MACHINE_END diff --git a/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/include/mach/entry-macro.S b/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/include/mach/entry-macro.S index eaca5921c..16d2d6d1a 100644 --- a/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/include/mach/entry-macro.S +++ b/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/include/mach/entry-macro.S @@ -4,26 +4,3 @@ .macro arch_ret_to_user, tmp1, tmp2 .endm - - .macro get_irqnr_preamble, base, tmp - ldr \base, =mcs814x_intc_base @ base virtual address of AIC peripheral - ldr \base, [\base] - .endm - - .macro get_irqnr_and_base, irqnr, irqstat, base, tmp - mov \tmp, #MCS814X_IRQ_STS0 @ load tmp with STS0 register offset - ldr \irqstat, [\base, \tmp] @ load value at base + tmp - tst \irqstat, \irqstat @ test if no active IRQ's - beq 1002f @ if no active irqs return with status 0 - mov \irqnr, #0 @ start from irq zero - mov \tmp, #1 @ the mask initially 1 -1001: - tst \irqstat, \tmp @ and with mask - addeq \irqnr, \irqnr, #1 @ if zero then add one to nr - moveq \tmp, \tmp, lsl #1 @ shift mask one to left - beq 1001b @ if zero then loop again - mov \irqstat, \tmp @ save the return mask - mov \tmp, #MCS814X_IRQ_STS0 @ load tmp with ICR offset - str \irqstat, [\base, \tmp] @ clear irq with selected mask -1002: - .endm diff --git a/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/irq.c b/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/irq.c index c1e48927d..b49e51190 100644 --- a/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/irq.c +++ b/target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/irq.c @@ -16,7 +16,7 @@ #include <asm/mach/irq.h> #include <mach/mcs814x.h> -void __iomem *mcs814x_intc_base; +static void __iomem *mcs814x_intc_base; static void __init mcs814x_alloc_gc(void __iomem *base, unsigned int irq_start, unsigned int num) @@ -43,6 +43,26 @@ static void __init mcs814x_alloc_gc(void __iomem *base, unsigned int irq_start, writel_relaxed(0xffffffff, base + MCS814X_IRQ_ICR); } +asmlinkage void __exception_irq_entry mcs814x_handle_irq(struct pt_regs *regs) +{ + u32 status, irq; + + do { + /* read the status register */ + status = __raw_readl(mcs814x_intc_base + MCS814X_IRQ_STS0); + if (!status) + break; + + irq = ffs(status) - 1; + status |= (1 << irq); + /* clear the interrupt */ + __raw_writel(status, mcs814x_intc_base + MCS814X_IRQ_STS0); + /* call the generic handler */ + handle_IRQ(irq, regs); + + } while (1); +} + static const struct of_device_id mcs814x_intc_ids[] = { { .compatible = "moschip,mcs814x-intc" }, { /* sentinel */ }, |